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Atlas / NTSB / CHI89DEK02

NTSB CAROL · Event

Event CHI89DEK02

1989-08-06 CIRCLEVILLE, Ohio, United States None 1 aircraft Status: Completed

Registry · N4JK

FAA Aircraft Registry record.

Make / Model

AVIAT AIRCRAFT INC A-1B

Year of manufacture

1999

Engine

LYCOMING O&VO-360 SER (180 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19990329

ADS-B equipped

Yes — Mode-S A4A8C1

Registrant of record

SELKIRK WINGS LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

MATERIAL FAILURE OF AN OIL LINE ALLOWING OIL TO ESCAPE AND IGNITE AS IT TOUCHED HOT EXHAUST MANIFOLD SURFACES.

Factual narrative

THE PILOT OF THE ACCIDENT HELICOPTER SMELLED AND SAW SMOKE IN THE COCKPIT, AND NOTED A LOW OIL PRESSURE INDICATION DURING CRUISE FLIGHT. THE PILOT PERFORMED AN AUTOROTATION IN A FIELD. AFTER LANDING, FLAMES WERE OBSERVED IN THE AREA OF THE EXHAUST MANIFOLD. TWO HANDHELD FIRE EXTINGUISHERS WERE EXPENDED ON THE FLAMES, BUT EFFORTS TO PUT OUT THE FIRE WERE UNSUCCESSFUL AND THE HELCIOPTER WAS DESTROYED. EXAMINATION OF THE WRECKAGE DETERMINED THAT OIL MOST PROBABLY WAS LEAKING FROM A SPLIT IN THE OIL PRESSURE LINE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1989_CHI89DEK02.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.